<template>
  <div class="login_container">
    <div class="login_box">
      <!-- 登录图标区域 -->
      <div class="banner_box">
          <img src="../assets/logo.png" alt="">
      </div>
      <!-- 表单区域 -->
      <el-form ref="loginFormRef" :model="loginForm" :rules="loginFormRules" label-width="0px" class="login_from">
        <!-- 用户名 -->
       <el-form-item prop="username">
          <el-input v-model="loginForm.username" prefix-icon="iconfont icon-user"></el-input>
      </el-form-item>
       <!--密码 -->
       <el-form-item prop="password">
          <el-input v-model="loginForm.password" prefix-icon="iconfont icon-3702mima" show-password></el-input>
      </el-form-item>
       <!-- 按钮 -->
       <el-form-item class="btns">
         <el-button type="primary" @click="login">登录</el-button>
         <el-button type="info" @click="resetLoginFrom">重置</el-button>
      </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
export default {
  data () {
    return {
      loginForm: {
        username: 'admin',
        password: '12345678'
      },
      // 表单的验证规则
      loginFormRules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { min: 3, max: 10, message: '长度在3~10个字符', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 6, max: 16, message: '长度在8~16个字符', trigger: 'blur' }
        ]
      }
    }
  },
  methods: {
    resetLoginFrom () {
      this.$refs.loginFormRef.resetFields()
    },
    login () {
      // const Qs = require('qs')
      this.$refs.loginFormRef.validate(async vaild => {
        // eslint-disable-next-line no-useless-return
        if (!vaild) return
        const { data: res } = await this.$http.post('login', this.loginForm)
        if (res.meta.status !== 200) return this.$message.console.error('登陆失败')
        this.$message.success('登陆成功')
        // 将登录成功的token保存到浏览器的session中
        window.sessionStorage.setItem('token', res.data.token)
      })
      this.$router.push('/home')
    }
  }
}
</script>

<style lang="less" scoped>
.login_container{
  background-color: #2b4b6b;
  height: 100%;
}
.login_box {
  height: 300px;
  width: 450px;
  background-color: #fff;
  border-radius: 5px;
  position: absolute;
  left: 0;
  top: 0;
  right: 0;
  bottom: 0;
  margin: auto;
}
.banner_box{
  height: 130px;
  width: 130px;
  border: 1px solid #eee;
  border-radius: 50%;
  padding: 10px;
  box-shadow: 0 0 10px #ddd;
  position: absolute;
  left: 50%;
  transform: translate(-50%, -50%);
  background-color: #fff;
  img{
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background-color: #eee;
  }
}

.btns {
    display: flex;
    justify-content: flex-end;
  }

.login_from {
  position: absolute;
  bottom: 0;
  width: 100%;
  padding: 0 20px;
  box-sizing: border-box;
}
</style>
